Really not trying to hijaak this thread but I just joined and the forum search tools really stink…
A Google search for “Avast firewall blocking vpn” returns very old and unuseful posts with no solutions!

I’m trying to find out why my VPN:
(Client - PPTP from Win7 MS connection)
(Server - ASUS RT-AC68U setup for PPTP default)
isn’t working unless I also disable Avast Firewall.

I’m using AIS 2015 v10.3.2225 (paid version)
If someone can direct me to where to move this post to that would be great. TIA